From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A311B3F0A95 for ; Fri, 8 May 2026 14:26:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778250404; cv=none; b=MsRQCjyn6BLYcoSBNeyPoxJPZVFCUIBPsG5ZIr3WmJ+KxEnrvMVntNQqa3xnch+WOCVWyqGB14yNDL/HMCXPMbMed+j14Inm16Jj3jN/RtF1b2qfh0quEtwB+mPpTaRu0u7NOYBi0rGpHZ4XwCuwraCuSnc7gW0/TjeWAuc5PuY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778250404; c=relaxed/simple; bh=ylwCs5+ZGF2I9UMNmXqL+3PLN0EQIdTW3lgqWveX+/A=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=B5jwJOhp0p3EHTO4RBoeAaDOINXY646mxZtEyxkaXU5jLEGdzaUh6OtrM2+UNQ9rCp8uhZS6W7riWwS8GxXwGDuV1Dzr1UpTCjCq/fRocOoyFvuyCRsT45VTvPUtxKjyGk2OlNJh3W+Teub5jDr9YxAJbknat7W1oO7x+cybcws= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=GOVFk2/h; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="GOVFk2/h" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3CAAFC2BCF4; Fri, 8 May 2026 14:26:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778250404; bh=ylwCs5+ZGF2I9UMNmXqL+3PLN0EQIdTW3lgqWveX+/A=; h=From:To:Cc:Subject:Date:Reply-To:From; b=GOVFk2/h16XJj9Ctdr/N95gzsM6SvJvUvCiDaSa2uhLEvpmnxtpOuUgErsVNphpKA Y/vzcSsJ9U6vIRhHW4ONId4GEzbX+k+JINCpGNQYZEuCQAzZwiZZZNm2QXmLGFZjfR 6IxtldJol3H0l3xZUQZQzXX8XruV9nfp4lUFFsTc= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-43463: rxrpc, afs: Fix missing error pointer check after rxrpc_kernel_lookup_peer() Date: Fri, 8 May 2026 16:23:12 +0200 Message-ID: <2026050802-CVE-2026-43463-8afd@gregkh> X-Mailer: git-send-email 2.54.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2458; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=R5bKejvhKc/WSxz0LFLu6Q9vWp0eYNHM/b1bFC9O+3M=; b=owGbwMvMwCRo6H6F97bub03G02pJDJl/P3bxfrd/33ku47iz2AqesmJe3o+Pi0JWnM5Mm7DL1 +HFn9c1HbEsDIJMDLJiiixftvEc3V9xSNHL0PY0zBxWJpAhDFycAjCRl08ZFmw33LRNqHPt5Ctf K8/O9fmw4Y/Xs1SGBSfP+Ov2eK9eGjxjSltgtJ20Uu7kBQA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: rxrpc, afs: Fix missing error pointer check after rxrpc_kernel_lookup_peer() rxrpc_kernel_lookup_peer() can also return error pointers in addition to NULL, so just checking for NULL is not sufficient. Fix this by: (1) Changing rxrpc_kernel_lookup_peer() to return -ENOMEM rather than NULL on allocation failure. (2) Making the callers in afs use IS_ERR() and PTR_ERR() to pass on the error code returned. The Linux kernel CVE team has assigned CVE-2026-43463 to this issue. Affected and fixed versions =========================== Issue introduced in 6.8 with commit 72904d7b9bfbf2dd146254edea93958bc35bbbfe and fixed in 6.18.19 with commit d55fa7cd4b19ba91b34b307d769c149e56ad0a75 Issue introduced in 6.8 with commit 72904d7b9bfbf2dd146254edea93958bc35bbbfe and fixed in 6.19.9 with commit 54331c5dcc6d97683d7ca2788e7ef9c9505e1477 Issue introduced in 6.8 with commit 72904d7b9bfbf2dd146254edea93958bc35bbbfe and fixed in 7.0 with commit 4245a79003adf30e67f8e9060915bd05cb31d142 Issue introduced in 6.7.3 with commit 056fc740be000d39a7dba700a935f3bbfbc664e6 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-43463 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: fs/afs/addr_list.c net/rxrpc/af_rxrpc.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/d55fa7cd4b19ba91b34b307d769c149e56ad0a75 https://git.kernel.org/stable/c/54331c5dcc6d97683d7ca2788e7ef9c9505e1477 https://git.kernel.org/stable/c/4245a79003adf30e67f8e9060915bd05cb31d142